Climate averages 1991–2020
Oaxaca weather
in September.
A warm, wet month: the 10th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Oaxaca: daytime highs average 24.0°C and nights cool to about 15.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 160 mm of rain on roughly 17 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.
The nearest other city in this atlas is Tuxtepec (131 km away). In September its highs average 30.0°C, 6.0°C warmer than Oaxaca, with 423 mm of rain.
Among the 153 cities listed in Mexico, Oaxaca ranks joint 101st of 153 for the warmest September highs and joint 88th of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Oaxaca is 2.6°C cooler than that mean.
From September to October, average highs fall by 0.2°C to 23.8°C, and monthly rainfall falls from 160 mm to 71 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Oaxaca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.3°C11.3°C | 11.3°C | 3.0 | 0.6 | 11.211 h |
| February | 26.4°C12.1°C | 12.1°C | 4.6 | 1.1 | 11.612 h |
| March | 28.2°C13.3°C | 13.3°C | 16 | 2.9 | 12.012 h |
| April | 29.5°C14.9°C | 14.9°C | 29 | 4.9 | 12.513 h |
| May | 28.3°C15.9°C | 15.9°C | 73 | 9.3 | 12.913 h |
| June | 25.4°C16.0°C | 16.0°C | 163 | 17.0 | 13.113 h |
| July | 24.7°C15.3°C | 15.3°C | 104 | 13.9 | 13.013 h |
| August | 24.9°C15.6°C | 15.6°C | 125 | 15.1 | 12.713 h |
| September, selected | 24.0°C15.7°C | 15.7°C | 160 | 17.1 | 12.212 h |
| October | 23.8°C14.6°C | 14.6°C | 71 | 8.7 | 11.812 h |
| November | 23.8°C12.8°C | 12.8°C | 9.8 | 2.0 | 11.311 h |
| December | 24.1°C11.7°C | 11.7°C | 3.5 | 0.7 | 11.111 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Tuxtepec in SeptemberMexico · 131 kmHigh 30.0°C · Low 23.6°C · 423 mm rain
- Tehuacán in SeptemberMexico · 172 kmHigh 23.7°C · Low 14.8°C · 121 mm rain
- Salina Cruz in SeptemberMexico · 191 kmHigh 30.5°C · Low 24.9°C · 206 mm rain
- Heroica Ciudad de Juchitán de Zaragoza in SeptemberMexico · 194 kmHigh 30.7°C · Low 24.3°C · 195 mm rain
- Orizaba in SeptemberMexico · 203 kmHigh 24.0°C · Low 16.3°C · 204 mm rain
- Córdoba, Mexico in SeptemberMexico · 204 kmHigh 24.6°C · Low 17.4°C · 196 mm rain
- Veracruz in SeptemberMexico · 244 kmHigh 29.9°C · Low 23.9°C · 217 mm rain
- Minatitlán in SeptemberMexico · 253 kmHigh 29.2°C · Low 23.8°C · 334 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Oaxaca) is explained once on the Oaxaca year overview and on the Sources, method and limits page.